Just bought this game from the Humble Bundle and decided to play the Steam version rather than DRM free, but when I launch the game from steam it pops the box that says "Launching Stacking", after that the box closes and the word "Syncing" pops up beside Stacking in my library and... Nothing happens. If I click play again, rather than say it is already running, it simply repeats the process. I also checked my task manager, it doesn't even create a process. Halp?

Yes, I am on Windows 7. When I verified the cache it said 1 file was missing, and that it would reaquire it. It then downloaded something for stacking for like a half a second, but it changed nothing when I tried to launch it again.

The game randomly works today, the only difference I can think of between now and then is that I was using a USB keyboard at the time, but am now using a pink and green plug (excuse me for not knowing the proper terms) set mouse and keyboard. Are you using a USB mouse and keyboard Slash?

In stacking, CQ and Brutal Legend, when you verify the integrity of the game cache you should not see that one file failed to validate. Psychonauts will say that from time to time but it doesnt affect anything.